Clarify what versions of java we support (no change)

.github/workflows/ci.yml

@@ -54,14 +54,17 @@ jobs:
       matrix:
         # We test Stripe SDK against Java LTS versions(8, 11, 17, 21) and currently supported non-LTS versions.
         # https://www.oracle.com/java/technologies/java-se-support-roadmap.html
+        # https://endoflife.date/oracle-jdk
         java-version:
+          # LTS versions
           - "1.8"
           - "11"
           - "17"
           - "21"
-          - "22"
-          - "23"
-          - "24"
+          - "25"
+          # non-LTS versions
+          # we should periodically add the latest non-LTS version here to test against
+          # as of 2025-09-29, the latest version of java (25) is LTS, so this section is empty. In March 2026, we'll add "26".
 
     steps:
       - uses: extractions/setup-just@v2

README.md

@@ -10,7 +10,13 @@ The official [Stripe][stripe] Java client library.
 
 ### Requirements
 
-- Java 1.8 or later
+We support LTS versions of the JDK. Currently, that's Java versions:
+
+- 8 (1.8)
+- 11
+- 17
+- 21
+- 25
 
 ### Gradle users